	function changeColor(obj){
		var content=document.getElementById('choose_0');
		var dl=content.getElementsByTagName('dl')[0].children;
		obj.setAttribute('class',"check");
		var next=obj.nextElementSibling;
		var previous=obj.previousElementSibling;
		for(var i=0;i<dl.length;i++){
			if(obj.previousElementSibling){
				previous.removeAttribute('class');
				if(previous.previousElementSibling){
					previous=previous.previousElementSibling;
					previous.removeAttribute('class');
				}
				if(previous==obj.firstElementChild){
					obj.firstElementChild.removeAttribute('class')
				}
			}
			if(obj.nextElementSibling){
				next.removeAttribute('class');
				if(next.nextElementSibling){
					next=next.nextElementSibling;
					next.removeAttribute('class');
				}
				if(next==obj.lastElementChild){
					obj.lastElementChild.removeAttribute('class')
				}
			}
			i++;
//			if(previous==obj.firstElementChild){
//			previous=previous.nextElementSibling;
//			}
		}
	}
	
